EP1287978A2 - Procédé et dispositif pour la compression de poudre métallique en un corps comprimé - Google Patents

Procédé et dispositif pour la compression de poudre métallique en un corps comprimé Download PDF

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Publication number
EP1287978A2
EP1287978A2 EP02017182A EP02017182A EP1287978A2 EP 1287978 A2 EP1287978 A2 EP 1287978A2 EP 02017182 A EP02017182 A EP 02017182A EP 02017182 A EP02017182 A EP 02017182A EP 1287978 A2 EP1287978 A2 EP 1287978A2
Authority
EP
European Patent Office
Prior art keywords
powder
die
metal powder
hydraulically operated
stamp
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP02017182A
Other languages
German (de)
English (en)
Other versions
EP1287978A3 (fr
Inventor
Jürgen Hinzpeter
Ulrich Zeuschner
Ingo Schmidt
Thomas Pannewitz
Udo Baltruschat
Thorsten Ehrich
Ulf Hauschild
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fette GmbH
Original Assignee
Fette GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fette GmbH filed Critical Fette GmbH
Publication of EP1287978A2 publication Critical patent/EP1287978A2/fr
Publication of EP1287978A3 publication Critical patent/EP1287978A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/30—Feeding material to presses
    • B30B15/302—Feeding material in particulate or plastic state to moulding presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/02—Compacting only
    • B22F3/03—Press-moulding apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space
    • B30B11/022—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space whereby the material is subjected to vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B29C43/361—Moulds for making articles of definite length, i.e. discrete articles with pressing members independently movable of the parts for opening or closing the mould, e.g. movable pistons
    • B29C2043/3615—Forming elements, e.g. mandrels or rams or stampers or pistons or plungers or punching devices
    • B29C2043/3618—Forming elements, e.g. mandrels or rams or stampers or pistons or plungers or punching devices plurality of counteracting elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2303/00—Use of resin-bonded materials as reinforcement
    • B29K2303/04—Inorganic materials
    • B29K2303/06—Metal powders, metal carbides or the like

Definitions

  • the invention relates to a method for pressing metal powder to a compact according to claim 1.
  • the powder articles are filled with a Grain size of about 0.1 - 500 microns "hooked" together, so that a dimensionally stable Formation arises that is easily removed from the press and can be subjected to a further processing operation, in particular the subsequent sintering.
  • the die is usually filled with the help of a so-called Filling shoe that is connected to a powder source.
  • the filling shoe moves on the surface of the die surrounding the die hole and is filled with powder. As the shoe moves across the hole, the powder falls into the die hole. Then the shoe is in the Starting position adjusted back. Both in the filling stroke and in Return stroke there is a one-sided compression at the edge of the die hole, in the areas that lie on the axis, along the the filling shoe is adjusted.
  • Hydraulic pressing in powder metallogy controlled from “microprocessor” from workshop and company "from 1986/6 page 80ff has become known powder filling using programmable speeds and Carry out times, vibrations or oscillations during filling.
  • the upper and lower stamps are then pressed after one typical flow chart.
  • the aim is to manufacture hard metal compacts the same possible density of all compacts, especially in To reach the cutting area. This goal is described with the known measures only incompletely achieved.
  • the invention is therefore based on the object of a method for pressing from creating metal powder to a compact in a powder press the goal of achieving the same density of all compacts even better over their extent is achieved.
  • the lower stamp during the filling of the die with metal powder in Vibrated.
  • the lower stamp takes a first position during the filling process. Then after the filling, it is moved into the dosing position, so that unnecessary Powder can be removed. Then the Lower stamp to a starting position for the pressing process.
  • the lower stamp which also several Lower stamp sections can contain an oscillation on the lower stamp instead, which is transferred to the powder and an equalization the powder distribution in the die hole, so that almost complete homogeneity is achieved.
  • the previous method measures such as vibrating the filling shoe and / or the die can be carried out.
  • the method according to claim 2 provides that during the pressing process, especially in the initial phase, upper and / or Lower stamps are made to vibrate. As soon as that If metal powder is under considerable pressure, it can oscillate or swinging of the stamp no longer lead to powder particles relocate. Therefore, the stamp oscillates primarily during the Initiation of the pressing process particularly effective.
  • the method according to the invention is particularly useful in hydraulic presses effectively applicable.
  • the hydraulic system or the hydraulic drive assigned a vibration generator which is controlled by the program control of the press.
  • the generation of vibrations can be done by using the valve arrangement the pressure generated in the hydraulic cylinder, an oscillating vibration in the hydraulic medium that acts on the press cylinder, is produced.
  • a separate hydraulic one Vibration generator with the cylinder of the hydraulic Press communicates to generate a desired vibration. In both cases, it is possible to use frequency and / or to set the amplitude of the vibration and to optimal values bring.
  • a die plate 10 can be seen with a Die bore 12 for producing a compact from a metal powder, for example for a cutting plate for milling, drilling or the like.
  • the bore 12 usually has a special contour, which, however, is not shown here.
  • a hydraulic press for the production of the compacts shown, the from a plunger 16 of a lower press cylinder, not shown is driven.
  • An upper stamp 18 is also shown in FIG from a plunger 20 of an upper hydraulic press cylinder, not shown is driven.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Powder Metallurgy (AREA)
  • Press Drives And Press Lines (AREA)
EP02017182A 2001-08-31 2002-07-31 Procédé et dispositif pour la compression de poudre métallique en un corps comprimé Withdrawn EP1287978A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10142624A DE10142624B4 (de) 2001-08-31 2001-08-31 Verfahren zum Pressen von Metallpulver zu einem Preßling
DE10142624 2001-08-31

Publications (2)

Publication Number Publication Date
EP1287978A2 true EP1287978A2 (fr) 2003-03-05
EP1287978A3 EP1287978A3 (fr) 2003-11-05

Family

ID=7697204

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02017182A Withdrawn EP1287978A3 (fr) 2001-08-31 2002-07-31 Procédé et dispositif pour la compression de poudre métallique en un corps comprimé

Country Status (3)

Country Link
US (1) US6845710B2 (fr)
EP (1) EP1287978A3 (fr)
DE (1) DE10142624B4 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6812395B2 (en) * 2001-10-24 2004-11-02 Bsst Llc Thermoelectric heterostructure assemblies element
US7326851B2 (en) 2003-04-11 2008-02-05 Basf Aktiengesellschaft Pb-Ge-Te-compounds for thermoelectric generators or Peltier arrangements
DE10318529B4 (de) * 2003-04-24 2006-01-12 Fette Gmbh Verfahren zum Betrieb einer Rundläufer-Tablettiermaschine und Rundläufer-Tablettiermaschine
DE102004051006B4 (de) 2004-10-20 2009-07-02 Fette Gmbh Rundlaufpresse
US7847179B2 (en) 2005-06-06 2010-12-07 Board Of Trustees Of Michigan State University Thermoelectric compositions and process
US7952015B2 (en) 2006-03-30 2011-05-31 Board Of Trustees Of Michigan State University Pb-Te-compounds doped with tin-antimony-tellurides for thermoelectric generators or peltier arrangements
US20080289677A1 (en) * 2007-05-25 2008-11-27 Bsst Llc Composite thermoelectric materials and method of manufacture
WO2009091747A2 (fr) * 2008-01-14 2009-07-23 The Ohio State University Research Foundation Amélioration du facteur thermoélectrique de mérite par modification de la densité électronique d'états
DE102008014084B3 (de) * 2008-03-13 2009-10-15 Robert Bosch Gmbh Pressling sowie Verfahren zum Herstellen eines Presslings
DE102010005780B4 (de) 2010-01-27 2013-07-11 Fette Compacting Gmbh Rundläufer-Tablettenpresse und Verfahren zum Pressen von Tabletten in einer Rundläufer-Tablettenpresse
WO2012135734A2 (fr) 2011-04-01 2012-10-04 Zt Plus Matériaux thermoélectriques présentant une porosité
CN103056360B (zh) * 2012-12-29 2015-09-09 东北大学 高性能金属粉末成形方法
WO2015050855A1 (fr) * 2013-10-01 2015-04-09 Bloom Energy Corporation Distribution de poudre préformée à une machine à presser la poudre
RU207247U1 (ru) * 2021-07-07 2021-10-19 Федеральное государственное бюджетное образовательное учреждение высшего образования "Волгоградский государственный технический университет" (ВолгГТУ) Вибрационный пресс для прессования порошкового материала
CN115007859B (zh) * 2022-06-23 2024-05-03 宁波京甬磁业有限公司 一种钕铁硼磁铁的成型取向工艺

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3767351A (en) * 1970-10-22 1973-10-23 Von Roll Ag Vibratory granulate compacting apparatus for block manufacture

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1142615A (en) * 1965-07-03 1969-02-12 Birmingham Small Arms Co Ltd Improvements in or relating to production of articles from metallic and non-metallic powders
CH475084A (de) * 1967-04-25 1969-07-15 Von Roll Ag Presse zum Verdichten von schüttbaren Massen
US4041123A (en) * 1971-04-20 1977-08-09 Westinghouse Electric Corporation Method of compacting shaped powdered objects
SU804165A1 (ru) * 1979-02-14 1981-02-15 Винницкий политехнический институт Вибропресс с гидроприводом
US4583966A (en) * 1982-10-13 1986-04-22 Beloit Corporation Method of filling calender/embosser rolls using vibrations
US4518335A (en) * 1984-03-14 1985-05-21 Allied Corporation Dilatant mold and dilatant molding apparatus
DE3614274A1 (de) * 1986-04-26 1987-10-29 Schunk Maschinen Und Anlagen G Verfahren und vorrichtung zum behandeln von teilchenfoermigem material mit druck und schall
WO1989003298A1 (fr) * 1987-10-15 1989-04-20 Schunk Maschinen Und Automation Gmbh Procede et dispositif de fabrication de moules en materiaux particulaires
JPH0780069B2 (ja) * 1986-11-25 1995-08-30 敏彦 朝見 振動プレス成形機
AT398726B (de) * 1987-09-29 1995-01-25 Leinweber Anstalt Ing Joh Verfahren und presse zur herstellung von blöcken
DE4026351A1 (de) * 1990-08-21 1992-02-27 Bayer Ag Verfahren und vorrichtung zur herstellung von tabletten aus metallpulver und deren verwendung als katalysatoren
JPH04333396A (ja) * 1991-05-07 1992-11-20 Toshihiko Asami 振動ラバー成形機
JPH05295405A (ja) * 1992-04-17 1993-11-09 Mitsubishi Electric Corp 成形体の製造方法
JP3883138B2 (ja) * 1994-12-14 2007-02-21 株式会社Ｎｅｏｍａｘ 樹脂ボンド磁石の製造方法
JPH08309594A (ja) * 1995-05-22 1996-11-26 Asami Akihiro 振動成形装置と振動プレス成形装置
CN1263497A (zh) * 1998-04-08 2000-08-16 米拉克龙公司 形成压制品的冲压方法和设备
US6106264A (en) * 1998-06-25 2000-08-22 Newtec Building Products Inc. Apparatus for molding blocks
US6325965B1 (en) * 1998-11-02 2001-12-04 Sumitomo Special Metals Co., Ltd. Forming method and forming apparatus
DE19903417B4 (de) * 1999-01-29 2007-03-29 Wilhelm Fette Gmbh Verfahren zum Befüllen einer Hydraulikpresse mit Pulvern
DE19945155A1 (de) * 1999-09-21 2001-06-28 Medsym Aerzteservice Informati Verfahren zur Herstellung eines Medikaments
DE10101471A1 (de) * 2001-01-12 2002-07-25 Gkn Sinter Metals Gmbh Verfahren zur Herstellung eines gesinterten Bauteils mit überlagerten Schwingungen während des Preßvorgangs

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3767351A (en) * 1970-10-22 1973-10-23 Von Roll Ag Vibratory granulate compacting apparatus for block manufacture

Also Published As

Publication number Publication date
DE10142624B4 (de) 2004-09-09
US20030041748A1 (en) 2003-03-06
EP1287978A3 (fr) 2003-11-05
US6845710B2 (en) 2005-01-25
DE10142624A1 (de) 2003-04-10

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